The officials in charge of the United Nations climate talks say that no deal will be done in Paris in December to avoid dangerous global warming.

After preparatory negotiations in Geneva, Switzerland, this month, Christiana Figueres, executive secretary of the UN Framework Convention on Climate Change (UNFCCC), confirmed that the target set previously, of limiting warming to 2 degrees centigrade above pre-industrial levels, would be missed.

will not be able to put us on the path for two degrees. […] We are not going to get there with the Paris agreement … We will get there over time.” This month she reiterated that the Paris talks would only “set the pathway for an orderly planned transition over time to a low-carbon society”.

Diplomats at Geneva put together an 86-page document for political leaders to haggle over in December. (It’s downloadable here.) But it’s already clear that:

■ The approach adopted in Kyoto in 1997 – to require countries to cut greenhouse gas emissions by particular amounts, within specified timeframes under international law – has been abandoned. Instead, negotiators are reported to be saying, the